.Since I came here two years ago, great changes __________ in the factory and many people want to come here to pay a visit.A have been taken place B. had been taken place C. have taken place D. are taking place
The mountains lie near our hotel. There is a fine ________ of the mountains from our hotel window.
They want to make _____ clear to the public that they are doing an important and necessary job.
It is suggested that another school___________ in our city.
Computersin offices and homes since 1970s.
Tom studies harder this term. _________, he has made great progress in his lessons.